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wc count field widths now are heuristically adjusted depending

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on the input size, if known.  If only one count is printed, it
is guaranteed to be printed without leading spaces.

Previously, wc did not align the count fields if
POSIXLY_CORRECT was set, but POSIX did not actually require
this undesirable behavior, so it has been removed.

* doc/coreutils.texi (wc invocation): Likewise.
This commit is contained in:
Jim Meyering
2003-07-20 15:24:21 +00:00
parent 85c6c1592c
commit 6c32aa26a2
1 changed files with 6 additions and 6 deletions
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12
doc/coreutils.texi
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@@ -2532,17 +2532,17 @@ wc [@var{option}]@dots{} [@var{file}]@dots{}
@end example
@cindex total counts
@vindex POSIXLY_CORRECT
@command{wc} prints one line of counts for each file, and if the file was
given as an argument, it prints the file name following the counts. If
more than one @var{file} is given, @command{wc} prints a final line
containing the cumulative counts, with the file name @file{total}. The
counts are printed in this order: newlines, words, characters, bytes.
By default, each count is output right-justified in a 7-byte field with
one space between fields so that the numbers and file names line up nicely
in columns. However, @acronym{POSIX} requires that there be exactly one space
separating columns. You can make @command{wc} use the @acronym{POSIX}-mandated
output format by setting the @env{POSIXLY_CORRECT} environment variable.
Each count is printed right-justified in a field with at least one
space between fields so that the numbers and file names normally line
up nicely in columns. The width of the count fields varies depending
on the inputs, so you should not depend on a particular field width.
However, as a @acronym{GNU} extension, if only one count is printed,
it is guaranteed to be printed without leading spaces.
By default, @command{wc} prints three counts: the newline, words, and byte
counts. Options can specify that only certain counts be printed.